Endocrine
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| What regulates the functions of the body | Nervous and endocrine systems act together to coordinate functions of all body systems
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| Nervous system | biological communication system
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| Endocrine system | uses biochemical called hormones that travel in body fluids and act as chemical messengers to target cell
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| Exocrine glands | secrete products through ducts that lead to the lumen of an organ, body surface or cavity ie. sweat glands
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| Endocrine glands | have no ducts; secretes hormones into extracellular fluids and diffuse into the bloodstream
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| Hormone | mediator molecule that is released in one part of the body but regulates the activity of cells in other parts
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| Hormone is? | A chemical messenger to a specific target cell
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| What do hormones regulate? | Metabolism; h2o and electrolyte balance; growth and development; reproduction
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| Circulating hormones | most endocrine hormones are circulating hormones
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| How many types of local hormones? | Paracrine and Autocrines; do not circulate
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| Lipid-soluble hormones | Steroid; Thyroid; nitric oxide
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| Water-Soluble | Amine; Peptide; protein; Eicosanoid hormones
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| What is te mechanism of action? | diffuse into cell from blood
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| What are the characteristics of water-soluble hormones? | Binds to receptor on exterior surface;
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| 5 different mechanisms of hormone control? | Signals from nervous system; Chemical changes in blood; Other changes; Negative feedback; Positive feedback
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| 3 effects of hormone Interaction? | Permissive; Synergistic; Antagonistic
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| Functions of the endocrine system | control internal environment; respond to marked changes; growth and development; reproduction process; regulate metabolism
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| Where is the pituitary gland located | Sella Turcica in the base of the brain
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| What hormones does the Anterior pituitary gland secrete? | GH-Growth Hormone; PRL-Prolactin; THS-Thyroid stimulating hormone; ACTH-Adrenocorticotropic Hormone; LH-Leuetinizing Hormone; FSH-Folicle stimulating hormone
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| What hormones are stored in the posterior pituitary gland? | ADH-Antidiuretic hormone; OT-Oxytocin
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| What 3 hormones are secreted by the Thyroid gland? | Thyroxine (T4, T3) and Calcitonin
Basal metabolic rate; reduce blood calcium levels
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| What hormone does the parathyroid gland secrete? | PTH-Parathyroid Hormone...increases blood calcium levels
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| the 2 layers of the adrenal glands? | Medulla-center; Cortex- outer
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| The cortex has 3 zones | Adrenal androgens; Glucocorticoids (cortisol); Mineralocorticoids (Aldosterone)
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| What 2 hormones does the Medulla secrete? | Epinephrine; Norepinephrine 80% epinephrine
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| The pancreas secretes what 2 hormones? | Glucagon and Insulin
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| What hormone does the pineal gland secrete? | Melatonin
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| What does the thymus gland secrete? | Thymosin....help develop T-Helper cells for immunity
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| What does the kidneys secrete? |
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cborealis2
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